| 一种新颖的科氏流量计数字信号处理方法 |
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| 引用本文： | 刘凤新,朱家雄.一种新颖的科氏流量计数字信号处理方法[J].计量学报,2010,31(2). |
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| 作者姓名： | 刘凤新 朱家雄 |
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| 作者单位： | 北京化工大学信息科学与技术学院,北京,100029 |
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| 摘 要： | 利用矩形自卷积窗对谐波和白噪声的抑制作用,加窗进行短时傅里叶变换能很好的跟踪测量信号频率,而且加窗后的信号能直接用于滑动Goertzel算法测量相位差的特性,提出了一种新的科氏流量计信号处理方法.仿真结果表明整个信号处理算法的测量精度高,实时性好,便于系统实现.
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| 关 键 词： | 计量学 科里奥利质量流量计 DSP算法 短时傅里叶变换 矩形自卷积窗 |
A Novel Coriolis Flowmeter Digital Signal Processing Methods |
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| LIU Feng-xin,ZHU Jia-xiong.A Novel Coriolis Flowmeter Digital Signal Processing Methods[J].Acta Metrologica Sinica,2010,31(2). |
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| Authors: | LIU Feng-xin ZHU Jia-xiong |
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| Abstract: | The rectangle self convolution window is added to short time Fourier transform to track and measure the singal pahse because it has a good performance on filterring the harmonic and white noise,and the signal afrer added window can be apply to the sliding Goertzel algorithm (SAG) to calculate signals phase difference.The results of simulation have proved the algorithm of the system is satisfied in the capability of real time and accuracy,and easy to system realization. |
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| Keywords: | Metrology Coriolis mass flow meter DSP palgorithm STFT Rectangular self-convolution window |
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